One more thing In case of ZynQ, instead of ZU11, we have smaller GTX count version - ZU7 in the same package. Its cost is about 700-750$. So we can install ZU7 by default, and when necessary, upgrade it to ZU11. Greg
-----Original Message----- From: Grzegorz Kasprowicz [mailto:gkasp...@elka.pw.edu.pl] Sent: Friday, April 08, 2016 2:00 PM To: 'Sébastien Bourdeauducq' <s...@m-labs.hk> Cc: 'Grzegorz Kasprowicz' <kaspr...@gmail.com>; 'Slichter, Daniel H. (Fed)' <daniel.slich...@nist.gov>; artiq@lists.m-labs.hk Subject: RE: [ARTIQ] FW: initial specification of the project Well, I compared highest speed grades (-3) in large packages :) XC7K325T-3FFG900E costs more than ZU11 in similar speed grade. Personally, I like this disgusting ZynQ stuff. I didn't have any special troubles to make it running. And it gives very handy feature of FPGA upgrade over Ethernet :) In this way you can keep all FPGA bit streams on single nfs server and load them at the startup. THE CPU and FPGA are independent, so you can boot CPU without the bitstream, connect to nfs, grab the bitteam and load it. So you can treat it as CPU which simply loads the FPGA and from programmable logic you treat it as ordinary Kintex device. And you get bunch of IOs for free which can be controlled over Ethernet. In case of complex system it is very desirable because you keep all the settings in single location and to upgrade it don't have to walk with programmer from board to board. We have a system which consists of 22 FPGAs in single box and all FPGA files are kept on single USB drive. The system is installed in UK and upgraded once a month and it is real pleasure to work in such manner. Another system is CMS muon trigger which consists of thousands of FPGAs and they all are loaded at the startup. It's much easier to keep control on bitstream versions of individual chips. The only alternative update channel in MTCA is either JTAG or I2C. With I2C you need about 30hours to programm the config FLASH. In case of JTAG, not every MTCA crate has JSM. Greg -----Original Message----- From: Sébastien Bourdeauducq [mailto:s...@m-labs.hk] Sent: Friday, April 08, 2016 12:13 PM To: Grzegorz Kasprowicz <gkasp...@elka.pw.edu.pl> Cc: 'Grzegorz Kasprowicz' <kaspr...@gmail.com>; 'Slichter, Daniel H. (Fed)' <daniel.slich...@nist.gov>; artiq@lists.m-labs.hk Subject: Re: [ARTIQ] FW: initial specification of the project On Friday, 8 April 2016 11:53:25 AM HKT Grzegorz Kasprowicz wrote: > Btw, > ZU11 FPGA costs more or less the same as 7K325 and offers almost twice > more logic resources. The price of ZU11 is $1,376.00 at 100pcs. > Since we will buy such quantity for our CBM project (Fair facility in > GSI), we can use that step pricing in this case as well. Even on Digikey in single quantities, 7K325T starts at $898.75 (and the cheapest one in FF which seems to be recommended for the full transceiver bandwidth is $1122.50) and we don't have to deal with any of this disgusting Zynq stuff. Sébastien _______________________________________________ ARTIQ mailing list https://ssl.serverraum.org/lists/listinfo/artiq
